Essa, R, H Hussain, and N. A A I Mohymen. “Study of Toxic Effect of Crud Colicin Exracted from Escherchia Coli on Viability of Immune Cells”. Ibn AL-Haitham Journal For Pure and Applied Sciences 19, no. 4 (December 30, 2017): 50–58 A. Accessed March 26, 2025. https://jih.uobaghdad.edu.iq/index.php/j/article/view/1666.